CN102721133B - Self-cooling type solid desiccant cooling dehumidification air-conditioning system - Google Patents
Self-cooling type solid desiccant cooling dehumidification air-conditioning system Download PDFInfo
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 146
- 238000001816 cooling Methods 0.000 title claims abstract description 64
- 239000002274 desiccant Substances 0.000 title claims abstract description 35
- 239000007787 solid Substances 0.000 title claims abstract description 30
- 238000004378 air conditioning Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 230000008929 regeneration Effects 0.000 claims abstract description 53
- 238000011069 regeneration method Methods 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 239000000498 cooling water Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 45
- 230000008569 process Effects 0.000 abstract description 42
- 230000001172 regenerating effect Effects 0.000 abstract description 7
- 238000003795 desorption Methods 0.000 abstract description 6
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 description 8
- 238000012546 transfer Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
本发明公开了一种自冷式固体干燥剂降温除湿空调系统，包括相互连接的冷却除湿系统及加热再生系统，所述冷却除湿系统及加热再生系统均采用将固体除湿材料附着到传统单独进行显热交换的翅片管式换热器表面构成的除湿换热器。本发明用除湿换热器代替除湿转轮；除湿过程中将再生式蒸发冷却产生的冷冻水引入除湿换热器构成自冷形式的低温内热源，冷却干燥剂除湿过程；再生过程将低品位热能产生的热水作为加热内热源引入干燥剂解吸过程；通过对除湿和再生过程的切换，实现连续制冷的热力循环。与除湿转轮系统相比，本发明不仅具有体积小、成本低的优势，同时可实现自冷式的降温除湿过程，极大提高整体系统效率。
The invention discloses a self-cooling solid desiccant cooling and dehumidification air conditioning system, which includes a cooling dehumidification system and a heating regeneration system connected to each other. The surface of the heat exchange fin tube heat exchanger constitutes the dehumidification heat exchanger. The present invention replaces the dehumidification runner with a dehumidification heat exchanger; during the dehumidification process, the frozen water generated by regenerative evaporative cooling is introduced into the dehumidification heat exchanger to form a self-cooling low-temperature internal heat source, which cools the desiccant during the dehumidification process; the regeneration process converts low-grade heat energy The generated hot water is introduced into the desiccant desorption process as the heating internal heat source; through the switching of the dehumidification and regeneration process, the thermodynamic cycle of continuous refrigeration is realized. Compared with the dehumidification wheel system, the present invention not only has the advantages of small size and low cost, but also can realize the self-cooling cooling and dehumidification process, which greatly improves the overall system efficiency.
Description
技术领域technical field
本发明涉及一种制冷空调技术领域的系统，具体是一种自冷式固体干燥剂降温除湿空调系统。The invention relates to a system in the technical field of refrigeration and air conditioning, in particular to a self-cooling solid desiccant cooling and dehumidification air conditioning system.
背景技术Background technique
近年来，随着人们生活水平的提高和极端环境在全球各地的频繁出现，广泛使用的传统蒸气压缩式热泵空调系统已经成为整个社会电力消耗的主要来源。导致传统压缩式空调系统能耗较高的一个主要原因是系统采用冷凝除湿的空气处理方法集中处理显热和潜热负荷。固体除湿空调技术采用自然工质-水作为制冷剂，基于固体干燥剂对水蒸气的吸附作用处理空气中的潜热负荷实现除湿，然后通过蒸发冷却方式处理空气中的显热负荷实现降温，系统实现了显热负荷和潜热负荷的分开处理和独立控制，克服了压缩式空调技术集中处理负荷的局限。同时由于干燥剂的热再生特性，系统可采用太阳能甚至压缩式系统的冷凝排热等低品位热能驱动。因此，固体除湿空调技术具有环保和节能两大优势。In recent years, with the improvement of people's living standards and the frequent appearance of extreme environments around the world, the widely used traditional vapor compression heat pump air-conditioning system has become the main source of electricity consumption in the whole society. One of the main reasons for the high energy consumption of the traditional compression air conditioning system is that the system adopts the air treatment method of condensation and dehumidification to focus on the sensible heat and latent heat load. The solid desiccant air-conditioning technology uses natural working fluid-water as the refrigerant. Based on the adsorption of water vapor by the solid desiccant, the latent heat load in the air is processed to achieve dehumidification, and then the sensible heat load in the air is processed by evaporative cooling to achieve cooling. The system realizes It realizes the separate processing and independent control of sensible heat load and latent heat load, and overcomes the limitation of centralized processing load of compression air conditioning technology. At the same time, due to the thermal regeneration characteristics of the desiccant, the system can be driven by low-grade thermal energy such as solar energy or even condensation heat removal of the compression system. Therefore, solid dehumidification air-conditioning technology has two advantages of environmental protection and energy saving.
目前固体除湿空调系统中广泛采用附着干燥剂的除湿转轮作为潜热负荷处理部件，显热负荷则主要是通过直接或间接蒸发冷却处理。由于除湿转轮构造的局限，系统在动态除湿过程中，由于吸附热的释放导致干燥剂与处理空气间的平衡吸附温度提高，干燥剂吸湿性能下降的同时增大了除湿与再生之间的热湿传递势差，循环需求的再生温度提高，整体循环性能难以提高。另一方面，直接蒸发冷却器的加湿冷却过程对循环除湿能力提出了更高的要求，导致再生温度上升，整体系统性能不高；而冷却塔间接蒸发冷却的极限最低温度只能到达室外空气的湿球温度，难以达到较高的显热负荷处理能力。At present, the desiccant rotor attached to the desiccant is widely used in the solid desiccant air-conditioning system as the latent heat load processing part, and the sensible heat load is mainly processed through direct or indirect evaporative cooling. Due to the limitations of the structure of the desiccant wheel, during the dynamic dehumidification process of the system, the equilibrium adsorption temperature between the desiccant and the treated air increases due to the release of adsorption heat, and the moisture absorption performance of the desiccant decreases while increasing the heat between dehumidification and regeneration. The moisture transfer potential is poor, the regeneration temperature required by the cycle is increased, and the overall cycle performance is difficult to improve. On the other hand, the humidification and cooling process of the direct evaporative cooler puts forward higher requirements on the dehumidification capacity of the cycle, resulting in an increase in the regeneration temperature, and the overall system performance is not high; while the limit minimum temperature of the indirect evaporative cooling of the cooling tower can only reach the temperature of the outdoor air wet bulb temperature, it is difficult to achieve high sensible heat load handling capacity.
经对现有技术的公开文献检索发现，为解决上述问题，中国专利申请号为200710045901.2的“可利用低品位热源的两级转轮除湿空调装置”专利，即是通过级间冷却的两级除湿流程设计，实现中间冷却的固体除湿过程，虽然与传统系统相比，两级除湿性能有所提高，然而系统无法实现内冷式除湿同时显热负荷处理能力仍然不足；中国专利申请号为201110356517.0的“一种空气源热泵与转轮除湿组合的复合空调系统”和中国专利申请号为200810052297.0的“高温热泵和除湿转轮与高温热泵耦合的空调系统”专利，都是通过一个压缩式热泵循环处理显热负荷并提供部分转轮再生热，虽然系统的显热负荷处理能力获得提高，然而由于系统中仍然采用了传统的压缩式空调，系统无法克服对环境存在影响的制冷剂使用，同时系统本身存在体积较大、构造复杂、成本较高的不足。After searching the public literature of the prior art, it was found that in order to solve the above problems, the Chinese patent application No. 200710045901.2 "Two-stage dehumidification and air-conditioning device with low-grade heat source" patent is a two-stage dehumidification through inter-stage cooling. The process design realizes the solid dehumidification process with intermediate cooling. Although the two-stage dehumidification performance has been improved compared with the traditional system, the system cannot achieve internal cooling dehumidification and the sensible heat load processing capacity is still insufficient; Chinese patent application number is 201110356517.0 "Composite air-conditioning system combining air source heat pump and dehumidification wheel" and "air conditioning system coupled with high-temperature heat pump and dehumidification wheel and high-temperature heat pump" with Chinese patent application number 200810052297.0, both of which are processed through a compression heat pump cycle Sensible heat load and provide part of the regenerative heat of the runner, although the sensible heat load handling capacity of the system has been improved, but because the system still uses the traditional compression air conditioner, the system cannot overcome the use of refrigerants that have an impact on the environment, and the system itself It has the disadvantages of large volume, complicated structure and high cost.
发明内容Contents of the invention
本发明的目的在于针对传统固体除湿空调系统的不足，提供一种自冷式固体干燥剂降温除湿空调系统。本发明系统中，采用除湿换热器代替除湿转轮；除湿过程中将再生式蒸发冷却产生的冷却水引入除湿换热器构成自冷形式的低温内热源，冷却干燥剂除湿过程；再生过程将低品位热能产生的热水作为加热内热源引入干燥剂解吸过程；通过对除湿和再生过程的切换，实现连续制冷的热力循环。与除湿转轮系统相比，本发明不仅具有体积小、成本低的优势，同时可实现自冷式的降温除湿过程，极大提高整体系统效率。The object of the present invention is to provide a self-cooling solid desiccant cooling dehumidification air-conditioning system for the shortcomings of the traditional solid dehumidification air-conditioning system. In the system of the present invention, the dehumidification heat exchanger is used instead of the dehumidification runner; during the dehumidification process, the cooling water generated by regenerative evaporative cooling is introduced into the dehumidification heat exchanger to form a self-cooling low-temperature internal heat source, and the desiccant dehumidification process is cooled; the regeneration process will The hot water generated by low-grade heat energy is used as a heating internal heat source to introduce the desiccant desorption process; through the switching of the dehumidification and regeneration process, the thermodynamic cycle of continuous refrigeration is realized. Compared with the dehumidification wheel system, the present invention not only has the advantages of small size and low cost, but also can realize a self-cooling cooling and dehumidification process, which greatly improves the overall system efficiency.
本发明是通过以下技术方案实现的。The present invention is achieved through the following technical solutions.
一种自冷式固体干燥剂降温除湿空调系统，包括相互连接的冷却除湿系统及加热再生系统。A self-cooling solid desiccant cooling and dehumidification air conditioning system includes a cooling and dehumidification system and a heating regeneration system connected to each other.
所述冷却除湿系统包括：处理空气侧风机、板翅式换热器、第一除湿换热器、混风阀、分风阀、蒸发冷却器、蒸发冷却器侧风机、处理空气侧风道、空气风道及回风侧风道，其中，所述处理空气侧风道的一端处理空气侧风机相连接，并依次穿过处理空气侧风机、板翅式换热器、第一除湿换热器及混风阀，并在其终端设有入风口；所述混风阀还连接有回风侧风道，所述回风侧风道的自由端设有回风口，所述处理空气侧风道上混风阀与入风口之间设有分风阀；所述空气风道的一端与分风阀相连接，并依次穿过蒸发冷却器及板翅式换热器，最终与蒸发冷却器侧风机相连接；所述第一除湿换热器与蒸发冷却器之间通过蒸发冷却器侧水路相连接。The cooling and dehumidification system includes: processing air side fan, plate-fin heat exchanger, first dehumidification heat exchanger, air mixing valve, air distribution valve, evaporative cooler, evaporative cooler side fan, processing air side air duct, The air duct and the return air duct, wherein one end of the air duct on the air duct is connected to the air duct on the air side, and passes through the air duct on the air side, the plate-fin heat exchanger, and the first dehumidification heat exchanger in sequence. and air mixing valve, and an air inlet is provided at its terminal; the air mixing valve is also connected with a return air channel, and the free end of the return air channel is provided with an air return port, and the air return channel on the processing air side There is an air distribution valve between the air mixing valve and the air inlet; one end of the air duct is connected to the air distribution valve, and passes through the evaporative cooler and the plate-fin heat exchanger in turn, and finally connects with the side fan of the evaporative cooler. connected; the first dehumidification heat exchanger is connected to the evaporative cooler through a water path on the side of the evaporative cooler.
所述回风侧风道上设有调风阀。An air regulating valve is arranged on the return air side air duct.
所述处理空气侧风道上入风口与分风阀之间设有调风阀。An air regulating valve is provided between the air inlet and the air distribution valve on the air duct on the processing air side.
所述空气风道上分风阀与蒸发冷却器之间设有调风阀。An air regulating valve is arranged between the air distribution valve on the air duct and the evaporative cooler.
所述蒸发冷却器侧水路上出水口一侧上设有水泵。A water pump is provided on one side of the water outlet on the side waterway of the evaporative cooler.
所述加热再生系统包括：再生空气侧风机、第二除湿换热器及再生空气侧管路，所述再生空气侧管路依次穿过再生空气侧风机及第二除湿换热器，所述第二除湿换热器上设有再生水加热热源，所述再生水加热热源通过再生热水回路与第二除湿换热器相连接。The heating regeneration system includes: a regeneration air side fan, a second dehumidification heat exchanger and a regeneration air side pipeline, the regeneration air side pipeline passes through the regeneration air side fan and the second dehumidification heat exchanger in sequence, and the first dehumidification heat exchanger The second dehumidification heat exchanger is provided with a regenerated water heating heat source, and the regenerated water heating heat source is connected with the second dehumidification heat exchanger through a regenerated hot water circuit.
所述再生热水回路上出水口一侧设有水泵。A water pump is provided on the water outlet side of the regenerated hot water circuit.
所述第一除湿换热器及第二除湿换热器均为：将固体除湿材料附着到传统单独进行显热交换的翅片管式换热器表面构成。Both the first dehumidification heat exchanger and the second dehumidification heat exchanger are formed by attaching solid dehumidification material to the surface of a traditional finned tube heat exchanger for sensible heat exchange alone.
本发明工作主要包括两个过程，这两个过程在系统运行时分别在两个除湿换热器侧同时交替进行：The work of the present invention mainly includes two processes, which are carried out alternately on the sides of the two dehumidification heat exchangers when the system is running:
第一过程为处理空气在除湿换热中的自冷除湿过程，包括以下步骤：The first process is the self-cooling and dehumidification process of the air in the dehumidification heat exchange, including the following steps:
第一步，除湿换热器管内流动的冷却水温度升高；In the first step, the temperature of the cooling water flowing in the tube of the dehumidification heat exchanger increases;
第二步，除湿换热器表面附着的固体除湿材料被冷却吸湿，实现潜热负荷处理；In the second step, the solid desiccant material attached to the surface of the desiccant heat exchanger is cooled and absorbs moisture to realize latent heat load treatment;
第三步，被处理空气流经除湿换热器空气表面温湿度降低，热负荷通过除湿换热器内部冷却水处理，湿负荷通过固体除湿材料对水蒸气的吸附作用处理；In the third step, the temperature and humidity of the air surface to be treated flow through the dehumidification heat exchanger to reduce, the heat load is treated by the internal cooling water of the dehumidification heat exchanger, and the moisture load is treated by the adsorption of water vapor by the solid dehumidification material;
第二过程为再生空气在除湿换热器中的加热解吸过程，包括以下步骤：The second process is the heating and desorption process of regeneration air in the dehumidification heat exchanger, including the following steps:
第一步，除湿换热器管内流动的热水温度降低；In the first step, the temperature of the hot water flowing in the tube of the dehumidification heat exchanger is lowered;
第二步，除湿换热器表面附着的固体除湿材料在再生热的加热作用下进行再生；In the second step, the solid dehumidification material attached to the surface of the dehumidification heat exchanger is regenerated under the heating of the regeneration heat;
第三步，再生空气流经除湿换热器空气表面温湿度升高。In the third step, the regeneration air flows through the dehumidification heat exchanger, and the air surface temperature and humidity increase.
与此同时，本发明中可通过调风阀的切换，实现两个除湿换热器的平稳切换过渡，保证系统可产生连续的制冷效果。At the same time, in the present invention, the smooth switching transition of the two dehumidification heat exchangers can be realized through the switching of the air regulating valve, so as to ensure that the system can produce continuous cooling effect.
本发明相比现有技术具有以下优势：Compared with the prior art, the present invention has the following advantages:
第一，除湿换热器管内冷却水在除湿过程可带走从吸附热和显热负荷，实现降温除湿热力过程，降低平衡吸附温度并维持干燥剂表面较低的水蒸汽分压力，提高系统除湿效率的同时降低循环驱动热源温度。First, the cooling water in the desiccant heat exchanger tube can take away the heat of adsorption and sensible heat load during the dehumidification process, realize the thermal process of cooling and dehumidification, reduce the equilibrium adsorption temperature and maintain a low partial pressure of water vapor on the surface of the desiccant, and improve the dehumidification of the system Efficiency while reducing cycle drive heat source temperature.
第二，与除湿转轮相比，除湿换热器装置结构紧凑、制作工艺简单、投资费用低、易于安装，和再生式蒸发冷却装置匹配具有可行性。因此系统可以继承再生式蒸发冷却的优势，实现较高的显热负荷处理能力。Second, compared with the dehumidification wheel, the dehumidification heat exchanger device has compact structure, simple manufacturing process, low investment cost, easy installation, and it is feasible to match with the regenerative evaporative cooling device. Therefore, the system can inherit the advantages of regenerative evaporative cooling and achieve higher sensible heat load handling capacity.
第三，与固体转轮除湿空调热空气强制对流再生相比，除湿换热器管内水侧对流换热系数远高于气体对流换热系数，同时通过采用传热性能好的金属基干燥剂涂层，强化循环再生过程的传热，一方面可进一步降低系统所需驱动热源的温度，另一方面强化传热可提高干燥剂的解吸量，改善传质。Third, compared with the forced convection regeneration of hot air in the solid runner dehumidification air conditioner, the convective heat transfer coefficient of the water side in the desiccant heat exchanger tube is much higher than the gas convective heat transfer coefficient. Layer, to strengthen the heat transfer of the cycle regeneration process, on the one hand, can further reduce the temperature of the driving heat source required by the system, on the other hand, the enhanced heat transfer can increase the desorption amount of the desiccant and improve the mass transfer.
第四，除湿换热器除湿过程中同时存在吸附热源和冷却内热源，再生过程中同时存在解吸热源和加热内热源，因此其耦合传热传质过程是一个区别于除湿转轮的双重内热源耦合传热传质过程。Fourth, there are both adsorption heat source and cooling internal heat source in the dehumidification process of the dehumidification heat exchanger, and there are both desorption heat source and heating internal heat source in the regeneration process, so its coupled heat and mass transfer process is a dual internal heat source that is different from the dehumidification wheel Coupled heat and mass transfer processes.
第五，循环通过再生温度以及再生蒸发冷却流量分配的调节，可达到不同潜热和显热负荷处理能力的配比，实现温湿度独立控制。此外循环除湿换热器出口空气状态是决定获取冷却水状态的主要参数，冷却水状态又反馈影响除湿换热器热湿负荷处理能力，因此干燥剂冷却除湿空调是区别于传统固体除湿空调的内反馈循环。Fifth, through the adjustment of regeneration temperature and regeneration evaporative cooling flow distribution, the ratio of different latent heat and sensible heat load processing capabilities can be achieved, and independent control of temperature and humidity can be achieved. In addition, the state of the air at the outlet of the circulating dehumidification heat exchanger is the main parameter that determines the state of the cooling water, and the state of the cooling water affects the heat and humidity load handling capacity of the desiccant heat exchanger. Therefore, the desiccant cooling dehumidification air conditioner is different from the traditional solid dehumidification air conditioner. feedback loop.
附图说明Description of drawings
图1为本发明冷却除湿结构示意图；Fig. 1 is a schematic diagram of cooling and dehumidification structure of the present invention;
图2为本发明加热再生结构示意图；Fig. 2 is a schematic diagram of the heating regeneration structure of the present invention;
图中，1为处理空气侧风机，2为处理空气侧风道，3为板翅式换热器，4为第一除湿换热器，5为回风口，6为调风阀，7为回风侧风道，8为混风阀，9为分风阀，10为调风阀，11为入风口，12为空气风道，13为调风阀，14为蒸发冷却器，15为蒸发冷却器侧风机，16为水泵，17为蒸发冷却器侧水路，18为再生空气侧风机，19为再生空气侧管路，20为第二除湿换热器，21为再生水加热热源，22为水泵，23为再生热水回路；In the figure, 1 is the air treatment side fan, 2 is the treatment air side air duct, 3 is the plate-fin heat exchanger, 4 is the first dehumidification heat exchanger, 5 is the air return port, 6 is the air regulating valve, and 7 is the return air outlet. Wind side air duct, 8 is the air mixing valve, 9 is the air distribution valve, 10 is the air regulating valve, 11 is the air inlet, 12 is the air duct, 13 is the air regulating valve, 14 is the evaporative cooler, 15 is the evaporative cooling 16 is a water pump, 17 is an evaporative cooler side water circuit, 18 is a regeneration air side fan, 19 is a regeneration air side pipeline, 20 is a second dehumidification heat exchanger, 21 is a heating source for regenerated water, 22 is a water pump, 23 is a regeneration hot water circuit;
图中，粗实线上箭头方向表示空气的流动方向，细实线上箭头方向表示水路的流动方向。In the figure, the direction of the arrow on the thick solid line indicates the flow direction of the air, and the direction of the arrow on the thin solid line indicates the flow direction of the water channel.
具体实施方式Detailed ways
下面结合附图对本发明的实施例作详细说明：本实施例在以本发明技术方案为前提下进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.
本实施例包括：相互连接的相互连接的冷却除湿系统及加热再生系统。This embodiment includes: interconnected cooling and dehumidification systems and heating regeneration systems.
如图1所示，冷却除湿系统包括：处理空气侧风机1、板翅式换热器3、第一除湿换热器4、混风阀8、分风阀9、蒸发冷却器14、蒸发冷却器侧风机15、处理空气侧风道2、空气风道12及回风侧风道7，其中，处理空气侧风道2的一端与处理空气侧风机1相连接，并依次穿过处理空气侧风机1、板翅式换热器3、第一除湿换热器4及混风阀8，并在其终端设有入风口11；混风阀8还连接有回风侧风道7，回风侧风道7的自由端设有回风口5，处理空气侧风道2上混风阀8与入风口11之间设有分风阀9；空气风道12的一端与分风阀9相连接，并依次穿过蒸发冷却器14及板翅式换热器3，最终与蒸发冷却器侧风机15相连接；第一除湿换热器4与蒸发冷却器14之间通过蒸发冷却器侧水路17相连接。As shown in Figure 1, the cooling and dehumidification system includes: process air side fan 1, plate-fin heat exchanger 3, first dehumidification heat exchanger 4, air mixing valve 8, air distribution valve 9, evaporative cooler 14, evaporative cooling Device side fan 15, process air side air duct 2, air air duct 12 and return air side air duct 7, wherein, one end of the process air side air channel 2 is connected with the process air side fan 1, and passes through the process air side in turn Fan 1, plate-fin heat exchanger 3, first dehumidification heat exchanger 4 and air mixing valve 8, and an air inlet 11 is provided at its terminal; The free end of the side air duct 7 is provided with an air return port 5, and an air distribution valve 9 is provided between the air mixing valve 8 and the air inlet 11 on the air side air duct 2; one end of the air duct 12 is connected with the air distribution valve 9 , and pass through the evaporative cooler 14 and the plate-fin heat exchanger 3 in turn, and finally connect with the side fan 15 of the evaporative cooler; the first dehumidification heat exchanger 4 and the evaporative cooler 14 are passed through the water path 17 connected.
回风侧风道7上设有调风阀6；处理空气侧风道2上入风口11与分风阀之间设有调风阀10；空气风道12上分风阀9与蒸发冷却器14之间设有调风阀13；蒸发冷却器侧水路17上出水口一侧设有水泵16。An air regulating valve 6 is provided on the return air duct 7; an air regulating valve 10 is provided between the air inlet 11 and the distributing valve on the air duct 2 of the processing air side; the distributing valve 9 and the evaporative cooler are arranged on the air duct 12 An air regulating valve 13 is arranged between 14; a water pump 16 is arranged on the side of the water outlet on the side waterway 17 of the evaporative cooler.
第一除湿换热器4为：将固体除湿材料附着到传统单独进行显热交换的翅片管式换热器表面构成。The first dehumidification heat exchanger 4 is formed by attaching solid dehumidification materials to the surface of a conventional finned tube heat exchanger for sensible heat exchange alone.
具体为，在冷却除湿模式下：处理空气依次流经处理空气侧风机1、板翅式换热器3、第一除湿换热器4、混风阀8、分风阀9、调风阀10和送风口11；其中在混风阀8中处理空气与依次流经回风口5、风阀6的室内回风7混合，在分风阀9中处理空气被划分为送风和依次流经风阀13、蒸发冷却器14、板翅式换热器3、风机15的风路12。冷却水依次流经第一除湿换热器4、水泵16、蒸发冷却器14。冷却水经第一除湿换热器4后温度升高，在水泵16的作用下被泵回蒸发冷却器14中被来自空气管路12的干燥空气冷却，再次返回第一除湿换热器4中。被处理空气在风机1的作用下，进入处理空气管路2中，在板翅式换热器3中与蒸发冷却器出口空气管路12中的空气换热被预冷，管路12的空气在风机15的作用下被排出，管路2中的处理空气然后流经第一除湿换热器4中被冷却除湿，出口的处理空气与室内回风管路7中的回风在混风阀8中混合，经过分风阀9分离为一股送风经送风口11送入室内，一股用作蒸发冷却器中的空气。Specifically, in the cooling and dehumidification mode: the processed air flows through the processed air side fan 1, the plate-fin heat exchanger 3, the first dehumidification heat exchanger 4, the air mixing valve 8, the air distribution valve 9, and the air regulating valve 10. and the air supply port 11; wherein the air to be processed in the air mixing valve 8 is mixed with the indoor return air 7 which flows through the air return port 5 and the air valve 6 in sequence, and the air to be processed in the air distribution valve 9 is divided into the air supply and the air flow in sequence. Valve 13, evaporative cooler 14, plate-fin heat exchanger 3, air path 12 of fan 15. The cooling water flows through the first dehumidification heat exchanger 4 , the water pump 16 and the evaporative cooler 14 in sequence. The temperature of the cooling water rises after passing through the first dehumidification heat exchanger 4, and is pumped back to the evaporative cooler 14 under the action of the water pump 16, cooled by the dry air from the air pipeline 12, and then returned to the first dehumidification heat exchanger 4 again . The processed air enters the processing air pipeline 2 under the action of the fan 1, and is pre-cooled by exchanging heat with the air in the outlet air pipeline 12 of the evaporative cooler in the plate-fin heat exchanger 3, and the air in the pipeline 12 It is discharged under the action of the fan 15, and the processing air in the pipeline 2 then flows through the first dehumidification heat exchanger 4 to be cooled and dehumidified. 8, and then separated into a stream of air through the air distribution valve 9 and sent into the room through the air outlet 11, and one stream is used as the air in the evaporative cooler.
如图2所示，加热再生系统包括：再生空气侧风机18、第二除湿换热器20及再生空气侧管路19，再生空气侧管路19依次穿过再生空气侧风机18及第二除湿换热器20，第二除湿换热器20上设有再生水加热热源21，再生水加热热源21通过再生热水回路23与第二除湿换热器20相连接。As shown in Figure 2, the heating regeneration system includes: a regeneration air side fan 18, a second dehumidification heat exchanger 20 and a regeneration air side pipeline 19, and the regeneration air side pipeline 19 passes through the regeneration air side fan 18 and the second dehumidifier in sequence The heat exchanger 20 and the second dehumidification heat exchanger 20 are provided with a regenerated water heating heat source 21 , and the regenerated water heating heat source 21 is connected to the second dehumidification heat exchanger 20 through a regenerated hot water circuit 23 .
再生热水回路上出水口一侧设有水泵。A water pump is provided on the water outlet side of the regenerated hot water circuit.
第二除湿换热器20为：将固体除湿材料附着到传统单独进行显热交换的翅片管式换热器表面构成。The second dehumidification heat exchanger 20 is formed by attaching solid dehumidification materials to the surface of a traditional finned tube heat exchanger for sensible heat exchange alone.
具体为，在加热再生模式下：再生空气依次流经再生空气侧风机18、第二除湿换热器20；再生热水依次流经第二除湿换热器20、水泵22、加热器21。经加热器21加热的热水经管路23被送入第二除湿换热器20中，第二除湿换热器20出口处温度降低的再生热水在水泵22的作用下再次返回加热器21进行加热；再生空气经风机18的作用被送入再生空气管路19中，然后流经第二除湿换热器20被加热同时带走解吸出的水蒸气，高温高湿的再生空气被排出。Specifically, in the heating regeneration mode: the regeneration air flows through the regeneration air side fan 18 and the second dehumidification heat exchanger 20 in sequence; the regeneration hot water flows through the second dehumidification heat exchanger 20 , the water pump 22 and the heater 21 in sequence. The hot water heated by the heater 21 is sent into the second dehumidification heat exchanger 20 through the pipeline 23, and the regenerated hot water whose temperature is lowered at the outlet of the second dehumidification heat exchanger 20 is returned to the heater 21 again under the action of the water pump 22 for dehumidification. Heating: The regeneration air is sent into the regeneration air pipeline 19 by the action of the fan 18, and then flows through the second dehumidification heat exchanger 20 to be heated while taking away the desorbed water vapor, and the high-temperature and high-humidity regeneration air is discharged.
本实施例包括4股同时运行的工质，包括2股水流程：冷却水和再生热水，以及2股空气流程：1股被处理空气和1股再生空气。冷却水流程侧连接方式为：蒸发冷却器水侧出口与第一除湿换热器水侧进口相连，第一除湿换热器水侧出口与蒸发冷却器水侧进口相连，构成一个循环。再生热水流程侧连接方式为：加热器水侧出口与第二除湿换热器水侧进口相连，第二除湿换热器水侧出口与加热器器水侧进口相连，构成一个循环。被处理空气侧连接方式为：被处理空气在处理空气侧风机作用下与板翅式换热器一侧进口通过风道相连，板翅式换热器一侧空气出口与第一除湿换热器空气表面进口通过风道相连，第一除湿换热器空气表面出口与混风阀一个进口通过风道相连，回风口的回风与混风阀另一个进口通过风道相连，混风阀出口与分风阀进口相连接，分风阀一个出口与送风口相连接，分风阀另一个出口与蒸发冷却器空气进口相连接，蒸发冷却器空气出口与板翅式换热器另一侧空气入口相连接，板翅式换热器出口空气排入大气环境。再生空气侧连接方式为：再生空气与第二除湿换热器空气表面通过风道相连，经过第二除湿换热器空气表面的再生空气被排入外部空间。This embodiment includes 4 working fluids running at the same time, including 2 water flows: cooling water and regenerating hot water, and 2 air flows: 1 treated air and 1 regenerated air. The connection mode of the cooling water process side is: the water side outlet of the evaporative cooler is connected to the water side inlet of the first dehumidification heat exchanger, and the water side outlet of the first dehumidification heat exchanger is connected to the water side inlet of the evaporative cooler to form a cycle. The connection mode of the process side of the regenerated hot water is as follows: the water side outlet of the heater is connected to the water side inlet of the second dehumidification heat exchanger, and the water side outlet of the second dehumidification heat exchanger is connected to the water side inlet of the heater, forming a cycle. The connection mode of the processed air side is: the processed air is connected to the inlet of the plate-fin heat exchanger through the air duct under the action of the fan on the processed air side, and the air outlet of the plate-fin heat exchanger is connected to the first dehumidification heat exchanger The air surface inlet is connected through the air duct, the air surface outlet of the first dehumidification heat exchanger is connected with one inlet of the air mixing valve through the air duct, the return air of the return air port is connected with the other inlet of the air mixing valve through the air duct, and the outlet of the mixing air valve is connected with the other inlet of the air mixing valve. The air distribution valve inlet is connected, one outlet of the air distribution valve is connected to the air supply port, the other outlet of the air distribution valve is connected to the air inlet of the evaporative cooler, and the air outlet of the evaporative cooler is connected to the air inlet on the other side of the plate-fin heat exchanger Connected, the outlet air of the plate-fin heat exchanger is discharged into the atmosphere. The connection mode of the regeneration air side is: the regeneration air is connected with the air surface of the second dehumidification heat exchanger through the air duct, and the regeneration air passing through the air surface of the second dehumidification heat exchanger is discharged into the external space.
本实施例工作主要包括两个过程，这两个过程在系统运行时分别在两个除湿换热器侧同时交替进行：The work of this embodiment mainly includes two processes, and these two processes are carried out alternately on the sides of the two dehumidification heat exchangers when the system is running:
第一过程为处理空气在除湿换热中的自冷除湿过程，包括以下步骤：The first process is the self-cooling and dehumidification process of the air in the dehumidification heat exchange, including the following steps:
第一步，除湿换热器管内流动的冷却水温度升高；In the first step, the temperature of the cooling water flowing in the tube of the dehumidification heat exchanger increases;
第二步，除湿换热器表面附着的固体除湿材料被冷却吸湿，实现潜热负荷处理；In the second step, the solid desiccant material attached to the surface of the desiccant heat exchanger is cooled and absorbs moisture to realize latent heat load treatment;
第三步，被处理空气流经除湿换热器空气表面温湿度降低，热负荷通过除湿换热器内部冷却水处理，湿负荷通过固体除湿材料对水蒸气的吸附作用处理；In the third step, the temperature and humidity of the air surface to be treated flow through the dehumidification heat exchanger to reduce, the heat load is treated by the internal cooling water of the dehumidification heat exchanger, and the moisture load is treated by the adsorption of water vapor by the solid dehumidification material;
第二过程为再生空气在除湿换热器中的加热解吸过程，包括以下步骤：The second process is the heating and desorption process of regeneration air in the dehumidification heat exchanger, including the following steps:
第一步，除湿换热器管内流动的热水温度降低；In the first step, the temperature of the hot water flowing in the tube of the dehumidification heat exchanger is lowered;
第二步，除湿换热器表面附着的固体除湿材料在再生热的加热作用下进行再生；In the second step, the solid dehumidification material attached to the surface of the dehumidification heat exchanger is regenerated under the heating of the regeneration heat;
第三步，再生空气流经除湿换热器空气表面温湿度升高。In the third step, the regeneration air flows through the dehumidification heat exchanger, and the air surface temperature and humidity increase.
本实施例通过冷却除湿和加热再生两种模式相互切换可以实现连续降温除湿和升温加湿过程。In this embodiment, the two modes of cooling and dehumidification and heating and regeneration can be switched to each other to realize the process of continuous cooling and dehumidification and heating and humidification.
在冬季，可将再生风引入室内，实现向室内供暖，并增湿。处理风排出室外。In winter, regenerative wind can be introduced into the room to heat and humidify the room. The processing wind is exhausted to the outside.
以上对本发明的具体实施例进行了描述。需要理解的是，本发明并不局限于上述特定实施方式，本领域技术人员可以在权利要求的范围内做出各种变形或修改，这并不影响本发明的实质内容。Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention.
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